Internet Engineering Task Force (IETF) N. Duffield
Request for Comments: 6534 AT&T Labs-Research
Category: Standards Track A. Morton
ISSN: 2070-1721 AT&T Labs
J. Sommers
Colgate University
May 2012
Loss Episode Metrics for IP Performance Metrics (IPPM)
Abstract
The IETF has developed a one-way packet loss metric that measures the
loss rate on a Poisson and Periodic probe streams between two hosts.
However, the impact of packet loss on applications is, in general,
sensitive not just to the average loss rate but also to the way in
which packet losses are distributed in loss episodes (i.e., maximal
sets of consecutively lost probe packets). This document defines
one-way packet loss episode metrics, specifically, the frequency and
average duration of loss episodes and a probing methodology under
which the loss episode metrics are to be measured.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6534.
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Duffield, et al. Standards Track [Page 1]RFC 6534 Loss Episode Metrics for IPPM May 2012
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Table of Contents
1. Introduction ....................................................4
1.1. Background and Motivation ..................................4
1.1.1. Requirements Language ...............................5
1.2. Loss Episode Metrics and Bi-Packet Probes ..................5
1.3. Outline and Contents .......................................6
2. Singleton Definition for Type-P-One-way Bi-Packet Loss ..........7
2.1. Metric Name ................................................7
2.2. Metric Parameters ..........................................7
2.3. Metric Units ...............................................7
2.4. Metric Definition ..........................................7
2.5. Discussion .................................................8
2.6. Methodologies ..............................................8
2.7. Errors and Uncertainties ...................................8
2.8. Reporting the Metric .......................................8
3. General Definition of Samples for
Type-P-One-way-Bi-Packet-Loss ...................................8
3.1. Metric Name ................................................9
3.2. Metric Parameters ..........................................9
3.3. Metric Units ...............................................9
3.4. Metric Definition ..........................................9
3.5. Discussion .................................................9